September 17, 2026 · Gastroenterology · DOI: 10.1053/j.gastro.2026.09.002

Faecalibacterium prausnitzii EXL01 Strain for the prevention of multiple-recurrent Clostridioides difficile Infection

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The authors aimed to evaluate the efficacy of the Faecalibacterium prausnitzii EXL01 strain in preventing recurrent Clostridioides difficile infection (rCDI) by restoring microbiome functions. In a murine model and a phase I clinical trial with adults who had multiple CDI episodes, EXL01 demonstrated safety and a high rate of recurrence-free patients, suggesting its potential as a precision microbiome therapeutic. The study highlights the importance of targeting microbiome function rather than solely focusing on taxonomic diversity in treating rCDI.

Nicolas Benech, Perle Guarino-Vignon, Paul McLellan, Camille Campidelli, Madeline Sergeant, Fanny Joubert, Sandrine Truong, Patricia Barbier, Emma Sandoz, Pauline Ruffié, Delphine Sedda, Alexiane Delmeule, Pierre Pradat, Cécilia Landman, Anne Bourrier, Léa Marchand, Laurent Alric, Julien Scanzi, Nadim Cassir, Amélie Dureault, Emilie Piet, Salomé Gallet, Elisabeth Botelho-Nevers, Tiphaine Roussel-Gaillard, Charlotte Cuerq, Florence Ader, Marielle Guillet, Nathalie Rolhion, Jean-Pierre Grill, Antonin Lamaziere, Jean-Marc Chatel, Séverine Pechine, Philippe Langella, Harry Sokol

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